Hidden columns in QTableView cause horizontal row lines to be drawn

When all of a QTableView's columns are hidden, the table shows never-ending horizontal row lines.

This is a regression as it only happens in Qt 4.3.3 but not in any previous version.

Test case:

QStandardItemModel *model = new QStandardItemModel(5,5);
QTableView *view = new QTableView;
view->setModel(model);

for(int i=0; i<model->columnCount(); ++i)